Solved: DMA Query

gsidhu · ‎12-12-2008

Hi,

Customer has Publisher and a single Subscriber running version 4.1.3 SR1.

Customer requires upgrade to 6.1.2 using new MCS hardware. I want to make sure that I use the correct method for

upgrading to 6.1.2 on the new servers.

This is an overview of how I plan to carry out the DMA export:

1) Backup existing Publisher database using BARS

2) Install 4.1.3 SR1 on one of the new MCS servers which will be the Publisher

3) Install BARS on the new MCS server (using same version of BARS that was used to backup

current Publisher database in step 1)

4) Use BARS Restore to restore the database of the existing Publisher onto the new one.

5) Install DMA on the new Publisher MCS server.

6) Run DMA to export data from new Publisher.

Is the above the correct way to export data from the current Publisher

I'm wondering (that instead of carrying out the above method) if I should export the data directly from the existig Publisher ie by installing DMA on the existing Publisher then running DMA export.

This would save me a lot

of time as it means that I don't need to carry out steps 2) to 6). I don't know if this is a feasable option.

Please could anybody who has done this type of upgrade advise me on which method they used for DMA?

Are both methods feasable - I could not find any details on CCO

Thanks

Gurmakh

allan.thomas · ‎12-12-2008

Hi Gurmakh, both methods are certainly feasable, however the major drawback of running the DMA on your existing Publisher, is the downtime required in order to complete the process.

As you will be required to rebuild the Publisher node on new hardware for the upgrade your are already half-way there.

Therefore, it would be advantageous to run the DMA at a time which is convenient to yourself and not to the business. Also it will provide you with the opportunity to troubleshoot if the DMA is not successful first time round.

Please take the opportunity to look at these document links for upgrading CCM 4.x to CCM 6.1.2:-

Upgrading to Cisco Unified Communications Manager Release 6.1.2 from Cisco Unified Communications Manager 4.x Releases

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/upgrade/6_1_2/upgrd612.html

Data Migration Assistant User Guide

Release 6.1(2)

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/dma/6_1_2/dmaug612.html

Hope this helps.

Allan.

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allan.thomas · ‎12-12-2008